This is the press release about the opening of the new Terminal A (Old name was Midfield Terminal) on the airports website:
https://www.adairports.ae/english/media-centre/press-releases/2023/2023-08-31-New-Terminal-Starting-November-2023
A news article about this:
https://onemileatatime.com/news/abu-dhabi-airport-midfield-terminal/
A video published by the airport about the tests of the new Terminal on Twitter with footage of the new Terminal A:
https://twitter.com/i/web/status/1702987839967736081
If you missed it, the new Terminal was a location of the new Mission Impossible Dead Reckoning movie. Here is a video on YouTube with scenes of that movie with footage of the new Terminal:
https://www.youtube.com/watch?v=ig2pewoXmlI